History of Field::light 1 change

In crates/backdrop/src/field.rs, lines 96–122 on 794ff94f194a4de38bbbd80498747a270cf8ced1f95e4decc09be5cff5fca18a. Every change that wrote or deleted one of these lines, or deleted a line from between them. Exact, because each line keeps its identity across edits; edits elsewhere in the file are not here. Also: oxy log -L 96,122:crates/backdrop/src/field.rs.